Notubes Crest/Iron Cross - real world experience with psi

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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Briscoelab
Posts: 1725
Joined: Thu Jan 26, 2006 6:01 pm

by Briscoelab

Have had really good luck with Alpha 340 and 400 rims for tubeless cx and road usage. If you aren't running a tire wider than 35mm they work just fine.

I'm not a fan of the Grail at all.

Subira
Posts: 24
Joined: Sat Sep 12, 2009 10:42 pm

by Subira

I'm using the Grail with Hutchinson Secteur 28, run them at 70 psi. Been fine so far, although the flints seem to be attracted to the Secteurs. But they seem to seal well an very quickly.

I would go for Grail, I have experience with Crests on my MTB. Nice rim, but definitely not designed for road pressures.

by Weenie


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jcrr
Posts: 85
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

summary below
Last edited by jcrr on Thu Mar 17, 2016 5:51 pm, edited 2 times in total.
"If it ain't broken, it could be lighter"

Subira
Posts: 24
Joined: Sat Sep 12, 2009 10:42 pm

by Subira

Yes - I'm running my Grail / Secteurs combo tubeless at 70 psi.

mrlobber
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Joined: Sat Oct 23, 2010 9:36 am
Location: Where the permanent autumn is

by mrlobber

jcrr wrote:@mrlobber- sorry to hear, hope it wasn't mid-ride... Can you comment on how the tire fit? Was mounting easy? Hard? Did it seat properly as far as you could tell?


It looked like it fit well... I was just experimenting with pressures at home. Wanted to put slightly more in because was planning to ride asphalt... well, it ended with a big bang and (obviously) a nice latex tube to be thrown away. Have put maximum 40psi since then for hard roads (to be one the safe side) without any trouble.

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jcrr
Posts: 85
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

Wanted to provide an update, and my own contribution to the little table I had produced in this thread.

I chose to try out Specialized's Roubaix Pro 2BR (700x30-32), with tubes, on my Iron Cross wheels. Mounting the tires was about medium hard- not the easiest, not the hardest. Then came time for inflating them... after having read all the different reports here, I have to admit I was nervous about a blowout. I carefully inflated, deflated, and tried to work the tire so the bead would mount on the rim, as intended. In the end, I took a chance and just kept pumping until pressure forced the bead to finally pop into place uniformly around the rim. I was at about 80psi. So far so good.

I'll update after a ride at more sensible pressures.


Summary further down
Last edited by jcrr on Fri Mar 18, 2016 6:06 pm, edited 1 time in total.
"If it ain't broken, it could be lighter"

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bdcheung
Posts: 7
Joined: Tue Mar 13, 2007 2:49 am

by bdcheung

I'm running Schwalbe Pro One tubeless in 28c with Iron Cross rims. 70psi rear, 60psi front, no issues so far after 100+ miles.

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jcrr
Posts: 85
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

summary below
Last edited by jcrr on Fri Mar 18, 2016 6:07 pm, edited 1 time in total.
"If it ain't broken, it could be lighter"

atonik
Posts: 27
Joined: Fri Jul 18, 2014 11:46 am

by atonik

Before I've swapped bikes, I've ridden for a year Crest with Vittoria Rubino pro 28c at 110PSI

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jcrr
Posts: 85
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

updated table at end of thread
Last edited by jcrr on Mon Mar 06, 2017 5:12 pm, edited 1 time in total.
"If it ain't broken, it could be lighter"

whilgenberg
Posts: 54
Joined: Wed Aug 08, 2012 5:54 pm

by whilgenberg

I've added my submissions. Talked with a Stans Employee at the Taipei Show a few weeks back about it and considering I'm a 155lb rider, he didn't think there would be any issue running nearly any tire on the road at the lowerish pressures.

RIM___________ TIRE (Tubeless?)______________ PSI_________ RESULT

Iron Cross_______Vittoria xg tnt 32c (Y)___________50_______Ka-Boom!
Iron Cross_______WTB Nano 40c (Y)______________35________Good
Iron Cross_______Spez Roubaix Pro 30-32 (N)______50-60_____Good
Iron Cross_______Shwalbe Pro One 28 (Y)_________60-70_____Good
Iron Cross_______Kenda Slant Six 32 (Y)__________30-50_____Good
Iron Cross_______Kenda Small Block Eight 38 (Y)___30-50_____Good
Iron Cross_______Clement Strada LGG 28 (N)______40-70_____Good


Grail___________ Hutchinson Sector28 (*)_________???_______Good
Grail___________ Hutchinson Fusion (Y)___________110_______Good
Grail___________ Challenge Almanzo 33 (N)_______55_______Ka-Boom!
Grail___________ Hutchinson Sector28 (Y)_________70_______Good

Crest___________ Conti GP 4S (N)________________80-100______Good
Crest___________ ?????????? (N)________________ 90________ Good
Crest___________ Vittoria Rubino 28 (N)__________110________ Good

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jcrr
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Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

@whilgenberg-

Did they say anything more to qualify 'nearly any' tire?? I ask because I called the US number, and a Stan's rep clearly said nothing less than 28c, nothing more than 50psi. I also asked if rider weight was a factor (I'm 140lbs) and was told it wasn't.

Thanks for increasing the little database :D
"If it ain't broken, it could be lighter"

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jcrr
Posts: 85
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

updated table at end of thread
Last edited by jcrr on Mon Mar 06, 2017 5:12 pm, edited 1 time in total.
"If it ain't broken, it could be lighter"

jfranci3
Posts: 180
Joined: Tue Jul 26, 2016 5:21 pm

by jfranci3

I ran 32c @ 60psi on Bontrager CX3 tubefuls w/ my 200lb bum on the the bike w/o issue on the Grails 32h. Grails are a hard deal to pass up - you can get these at Performance for $320/set. I have 2 seasons on a set which I use with 25c and 32c tires.



RIM___________ TIRE (Setup as Tubeless?)_______ PSI_________ RESULT

Iron Cross_______Vittoria xg tnt 32c (Y)___________50____Ka-Boom!
Iron Cross_______WTB Nano 40c (Y)______________35________Good
Iron Cross_______Spez Roubaix Pro 30-32 (N)______80-85_____Good
Iron Cross_______Shwalbe Pro One 28 (Y)_________60-70_____Good
Iron Cross_______Kenda Slant Six 32 (Y)__________30-50_____Good
Iron Cross_______Kenda Small Block Eight 38 (Y)___30-50_____Good
Iron Cross_______Clement Strada LGG 28 (N)______40-70_____Good

Grail___________ Hutchinson Sector28 (*)_________???_______Good
Grail___________ Hutchinson Fusion (Y)___________110_______Good
Grail___________ Challenge Almanzo 33 (N)________55____Ka-Boom!
Grail___________ Hutchinson Sector28 (Y)__________70_______Good
Grail___________ Bontrager CX3 32 (N) ___________60________Good
Grail___________ Conti GP4000s (N) ___________80-115_______Good

Crest___________ Conti GP 4S (N)________________80-100______Good
Crest___________ ?????????? (N)________________ 90________ Good
Crest___________ Vittoria Rubino 28 (N)__________110________ Good

quadlt250
Posts: 22
Joined: Sat Mar 21, 2015 10:25 pm

by quadlt250

I added mine, Clement Strada 28s on Crest rims with tubes (50-80psi) All Good in the neighborhood :)

RIM___________ TIRE (Setup as Tubeless?)_______ PSI_________ RESULT

Iron Cross_______Vittoria xg tnt 32c (Y)___________50____Ka-Boom!
Iron Cross_______WTB Nano 40c (Y)______________35________Good
Iron Cross_______Spez Roubaix Pro 30-32 (N)______80-85_____Good
Iron Cross_______Shwalbe Pro One 28 (Y)_________60-70_____Good
Iron Cross_______Kenda Slant Six 32 (Y)__________30-50_____Good
Iron Cross_______Kenda Small Block Eight 38 (Y)___30-50_____Good
Iron Cross_______Clement Strada LGG 28 (N)______40-70_____Good

Grail___________ Hutchinson Sector28 (*)_________???_______Good
Grail___________ Hutchinson Fusion (Y)___________110_______Good
Grail___________ Challenge Almanzo 33 (N)________55____Ka-Boom!
Grail___________ Hutchinson Sector28 (Y)__________70_______Good
Grail___________ Bontrager CX3 32 (N) ___________60________Good
Grail___________ Conti GP4000s (N) ___________80-115_______Good

Crest___________ Conti GP 4S (N)________________80-100______Good
Crest___________ ?????????? (N)________________ 90________ Good
Crest___________ Vittoria Rubino 28 (N)__________110________ Good
Crest___________ Clement Strada LGG 28 (N)__________50-80____ Good

by Weenie


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